Roll for making tapered wheel disks



Nov. 1, 1927. L 7,853

E; G. BUDD ET AL ROLL FOR MAKING TAPERED WHEEL msxs Filed Feb. 10. 1926 2 Sheets-shew 1 fizz Janitors t Edward aim, and wram J flflorwggz A ZZV F/JZZ nixxvuwm IWI E. G. BUDD ET AL ROLL FOR MAKING TAPERED WHEEL DISKS Filed Feb. 10. 1926 2 Sheets -Sheet. 2

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v drawings of a Patented Nov. 1, i927;

attan EDWARD G. BUDD ANDJ. HAROLD HUNT, 0F PHILADELPHIA, PENNSYLVANIA, AS- SIGNORS TO BUDD WHEEL COMPANY, OFPHILADELPHIA, PENNSYLVANIA, A COR- PORATION OF PENNSYLVANIA.

' ROLL FOR MAKING TAJEERED WHEEL DISKB.

Application filed February 10, 1926. Serial No. 87,375.

Our invention relates-to traversing rolls and to an anti-friction mounting for such rolls, particularly adapted for use in machines of the class shown, for example, in an application for Letters Patent filed in the name of Emil A. Nelson for machine for rolling wheel disks, Serial No. 21,797, filed April 9, 1925.

It is an obj vide a workin which is particularly reduction of the work.

It is a further object of our invention to provide an anti-frictionbearing for traversect of our invention to proface for rolls of this class, adapted fora rapid ing rolls capable of standing up under the severe working conditions to which such rolls are subjected under the heavy rolling pressures. o

It is a further. object of our invention to incorporate in the roll structure antifriction bearings to take up effectively the heav radial as well as the axial thrusts to whic the rolls are subject.

It is a further object of our invention to provide improved means for mounting and securing a removable tread to the body of the roll. L

These and other objects and advantages will appear from the following detailed description taken with the disclosure in the preferred embodiment of our invention. i

In the drawings- Figure 1 is a side elevation of a machine similar to that disclosed in the hereinbefore referred to application of Emil A. Nelson, showing our invention embodied therein, parts of the left hand side of the machine being shown in a vertical section taken through the axis of the rolls.

' Fig. 2 is a. detail section through the roll axis similar to that shown in Fig. 1 but on a greatly enlarged scale.

In the machine of the class to which our invention is shownapplied, a .metal blank,

to be rolled is supported on a rotating support or table and acted on by rolls which engageithe blank under pressure and are moved radiallyofthe blank from the center outwardly, while the blank rotates, the rolls being rotatably supported and being rotated by contact with the surface of the blanks on the rotating table. As the rolls move radially outwardly under heavy pressure, the metalis reduced in thickness. The heavier the pressure for a given working face of the roll the more rapid the reduction of the blank, and the greater the strain and wear on the parts.

.lln accordance with our present invention,

friction bearings whereby the load stresses are so distributed as to insure a long life of the bearings under-the heav rolling pressures requisite for rapid re notion of the-v metal of the blank. Also, our construction, by utihzing surfacesof the roll body as race-waysfor the rollers of the anti-friction bearings, permits the use of a heavy central supporting shaft, in combination with a demountable roll tread, while still leaving the body of the roll of sufficient dimensions radially to withstand the heavy radial pressures, without unduly increasing the over all diameter of the .roll structure.

Referring more particularly to the accompanying drawings, the machine in which our 7,

invention is shown incorporated comprises the base 10, from which is supported a superbase 11 carrying'a vertically reciprocating cradle 12 in which the rotar blank support 13 mounted. A blank 14 is shown in dotted lines centered on the support 13 by a blank centering pin 15.

Also supported from the base 10 by means of the vertical columns 16 is a roll carrying head 17 inwhich the rollsupporting frames 18 are guided in their reciprocating movements to cause the rolls to travel radially across the face of the rotary blank support 13. The roll supporting frames 18 are secured to the roll shafts'19 (only one of which is shown), and are reciprocated by the axially reciprocating movements of said shafts. The movements of the vertically re-- ciprocating cradle 12 and of the axially reciprocating shafts are effected by suitable driving mechanism, notnecessary to be described here, and are so timed that, when the cradle is lifted, the rolls are moved axially outward and, when the cradle is low ered, the rolls are moved'axially inward.

In the drawings they are shown in a position they occupy at a given instant during their outward stroke.

In the machine in which our invention is shown embodied the roll supportin frame 18 (reference will now be had only to the left hand frame since the left hand and right hand frames are similar in construction) has two depending bearings 20 and 21 between which the roll designated as a whole by the numeral 22 is rotatably mounted on its shaft, which shaft has a fixed relation both to the frame and to the roll 22. The bearing 21 is quite short, being formed by a plate secured as by machine screws 23 to the end face of the frame 18. The bearing 20, on the other hand, is of extended length and the shaft is secured against rotation therein by the splined connection 25.

The construction so far described is substantially the same as that disclosed in the hereinbefore referred to application of Emil A. Nelson, but only so much of the structure of the former application has been incor orated herein as will enable one to fully un erstand the novel features in which our invention resides, and which comprisesthe novel mounting and structure of the rolls now to be described.

To effectively take the radial and axialthrusts and to permit the free rotation of the roll on the shaft '19, We provide a plurality of anti-friction bearings, and to prevent unduly enlarging the centralopenin in the roll we constitute internal periphera surfaces on the body of the roll itself, as race-ways for said bearings.

These bearings comprise, in the present embodiment of our invention, two axially spaced roller bearings adapted to take the radial load, 'and another roller bearing adapted to take the axial load when the roll is making its working stroke outwardly across the surface of the blank.

The outer (outer with reference to the center of the machine) radial anti-friction bearing comprises a sleeve 26 on the shaft 19, this sleeve being clamped against the inner face of the depending bearing 20 and having a cylindrical race-way 27 on itsperiphery for the rollers 28, the outer raceway for these rollers being formed by an inner peripheral cylindrical surface 29 extending to the outer end face 30 of the roll. All the rollers- 28 of the bearing are retained by a retaining cage 31 of usual construction. To restrain the rolls and cage against axial outward movement, a shoulder 32 is provided at the outer end of the inner raceway 27', and corresponding inward movement is prevented by a corresponding shoulder 33 on the body of the roll 22.

Inwardly beyond the raceway 27 the sleeve 26 is of reduced external diameter for a purpose which will presently appear. .It is clamped against the inner face of the depending bearing 20 by a sleeve 34, corresponding to, but of different cross sectional form from, the sleeve 26. The sleeve 34 is I roll. The outer raceway for the rollers 36 is formed by an inner peripheral surface 37 extending to the inner end face 38 of the roll. The rollers 36 are retained together by a cage 39. On its outer side the cage is shown cut away at 40 to provide clearance for an outwardly extending flange 41 provided on the outer end of the sleeve 34 for a purpose which will presently appear. Shoulders 42 and 43 prevent axial movement of the rollers 36.

Between the radial anti-friction bearing raceways 29 and 27, the roll 22 is formed with an inwardly-extending web 44 terminating adjacent the periphery of the reduced portion of the sleeve 26. The inner radial surface 45 of this web 44: is spaced from the corresponding radial surface 46 provided on the outer face of the sleeve 34 extended by the flange 41, and these surfaces 45 and 46 form outer and inner raceways respectively for an axial thrust bearing, including the rollers 47 arranged between said surfaces, and retained together by the cage 48.

The anti-friction bearing sleeves 26 and 34 on shaft 19 are clamped in engagement with each other and against the inside face of the bearing 20 of the frame 18 by a clamping member ,or nut 49 screwed onto the reduced screw threaded end of the shaft 19, and the screwing home of this member also securely clamps the frame 18 against the shoulder 50 of the shaft (see Fig. 1) thereby securely locking these parts against relative axial movement.

The member 49 may be screwed up by a spanner, and supports the outer end of the shaft by having its peripheral cylindrical surface fitting a corresponding opening in the bearing 21. To prevent loosening of the clamping member, suitable means may be provided, such means, in the present instance, being shown to consist of a plurality of notches 51 formed in the periphery of the member, into any one of which a detachable locking lug 52, seated in a recess in the bearing 21, and secured by a screw 53, is adapted to engage to lock member 49.

The foregoing arrangement of anti-friction bearings is a relatively simple arrange ment permitting the use of rollers of relatively large diameter. it is well adapted to withstand the heavy thrusts to which the roll is subjected when making its working stroke. It will be seen that, since the working face of the roll is, at a given instant, in contact with the work only over a comparatively small area of its-peripheryadjacent its rear face, that the tremendous working pressure, becauseofthe radial traverse of the roll while so in active contact with the.

Another feature of our invention'involves.

the provision of a novel shape of working face for the roll, which is-characterized in that the substantially cylindrical face 54 of the roll contacting the work is relatively till narrow and provided with a comparatively small leading-in radius at 55. To obtain this narrow leading-in radius with the width of.

roll body necessary for effectively supporting it by the spaced hearings on the shaft, it is necessary to form the leading-in face of the roll adjacent the leading-in radius concave, as at 56, if the Weight and overall diameter of the roll as a whole are to be kept within the desired limits. A minor object in making the leading-in face .of the roll concave is to, minimize the 'frictional contact of the flared-up outer edge 'ofthe blank with the leading-in face of the roll.

13y.v the use 01: this novel formation'of the working face, leading-in radius and leadingin face, we have, by speeding up the table, found it possible to reduce the metal of the blank at a much greater rate than with the wider working face, having the relatively large leading-1n radius-heretofore used, and this without substantially increasing the working pressure and, consequently, the

power to run the machine; And at the'sametime we have found that'the rolled surface produced is substantially free-from surface irregularities or ridges.

We prefer to form the tread portion 58 of the roll demountable fromthe body of the roll, as shown, so that it will not be necessary to remove the entire'roll when it is desired to heat treat the working face of the roll and togrind it, or if, for any reason, the removal of the tread is desirable. The body portion 56 ofthe roll is, to this end, formed with a substantially cylindrical peripheral seat 57 adapted to receivev a corresponding inner peripheral'seat on the removable tread 58 which is non-rotatably secured to the body, as by sp'lined connections 59. The forward portion of the cylindrical seat on the roll body 56 is screwthreaded to receive a screw-threaded clamping ring 60 which, when screwed home,

clamps the tread 58 on its seat. The tread is recessed at 61 to receive a portion of the clamping ring therein, which construction permits the location of the working face 54 near to the etorward face 38 of the roll body,

which is desirable to permit working the blank close to its center. To look the clamping ring, a locking screw 62 maybe provided and either the ring 50 or the-tread 58 is provided with a plurality of equally spaced holes to receive said screw, while the other of saidmembers has a single hole, or if a fine adjustment is desired, a plurality of equally spaced holes of slightly less or slightly greater number than the number of holes in f:

the opposed member. The locking screw 62 Y can then be inserted into aligned holes ontl1e'ring and tread, or if none are exactly aligned, into those which can be brought into alignmentmost readily by a slight rotation of the locking ring:

While wehave herein described the invention in a preferred embodiment thereof, it will be understood by those skilled in the art that changes in the construction and arrangement of parts may I be made which fall within, the spirit and scope of our invention. We intend toicover such changes in the appended claims.

What we claim is:

. 1. In a mounting structure for rolls used in metal-rolling machines, the combination of a fixed shaft, a roll body mounted therei ,on through the intermediary of a plurality of sets ofanti-i'riction bearings, one set or antiiriction bearings being adapted to take radial thrust and another set bemg adapted to take axial thrust, and surfaces on said roll body forming raceways of said sets of anti friction bearings. p

2. In a mounting structure for rollsused in metal-rolling machines the combination of a fixed shaft, a roll body mounted thereon through the intermediary of two spaced sets of anti-friction bearings adapted to take radial thrust, and an inwardly-extendingweb between said radial bearings forming a radial surface providing a raceway for an axial thrust bearing.

3. In a mounting structure for rolls used in metal-rolling machines, the combination of a fixed shaft, a roll body mounted thereon throu h the intermediary of spaced sets of antiriction bearings adapted to take radial thrust, a radial inwardly-extending web on said roll body between said spaced setsof radial thrust bearings, said radial web providing a raceway for a set 0fan t1- friction bearm s adapted to take axlal thrust, and an e ement commonly providing raceways for the radial and axial thrust bearings.

4. In a mounting structure for rolls used in metalerollin machines, the combination of afixed sha and a roll body mounted thereon through the intermediary of antifriction bearings, said anti-friction bearings comprising spaced radial thrust bearings or iii! opposite sides of a central inwardly-extendviii-g web on roll body, and axial antian nu thrust bearings having-parts of their raceway structures in common.

6. In a mountmg structure for rolls used in metal-rolling machines, the Combination of a fixed shaft and a roll body having a central inwardly-extending portion forming a radial shoulder, a radial anti-friction hearing arranged between said shaft and roll body, and an axial anti-friction bearing arranged between one of said shoulders on the roll body and a portion of the raceway structure of said radial bearing.

7. In a machine for rolling metallic disks, a rotating support for a blank, a roll adaptedto be traversed outwardly in rolling contact with the blank to form the same, a shaft rotatably supporting the roll, axially spaced radial anti-frlction bearings between roll and shaft, the roll having its working face arranged substantially in the plane of the inner one of said bearings, and an axial antifriction bearing arranged between said spaced radial bearings, whereby the torque induced by the rolling contact of the roll with the blank as it is traversed outwardly and tending to turn the roll about an axis at right angles to the axis of the shaft'is effectively distributed through said bearin 8. In a machine for rollin metallic dis a rotating support for a blan a roll adapted to be traversed outwardly in rolling contact with the blank, said roll comprising a body portion and a tread portion demountably secured to the body portion, the tread portion having its inner face recessed to provide an annular seat, and a clamping ring for securing the tread portion on the body portion adapted to seat in said recess.

9. In a machine for rolling metallic disks, a rotating blank support, and a roll adapted to be traversed radially outwardly in rolling contact with the blank, said roll having a working face in rolling contact with the blank and a concave leading-in face.

10. ha machine for rolling metallic disks,

a rotating support for the blank, and a roll adapt ed to be traversed outwardly in rolling contact with the blank, said roll having a concave leading-in face, and a narrow working face of substantially uniform diameter.

11. In a machine for rolling metallic disks, a rotating support for the blank, and a roll adapted to be traversed outwardly in rolling contact with the blank, said roll having a narrow working face, a concave leading-in face and a curve of relatively small radius joining said faces.

12.. In a mounting structure for rolls used in metal-rolling machines, the combination of a fixed shaft, a roll body mounted thereon, through the intermediary of a plurality of sets of anti-friction bearings, said roll body having an inwardly extending web providing a raceway for an axial anti-friction bearing.

In testimony whereof we hereunto aflix our signatures.

' EDWARD G. BUDD.

J. HAROLD HUNT. 

